O Captain! My Captain! BY WALT WHITMAN ,Summery and analysis easy

Poem : google
O Captain! My Captain!
BY WALT WHITMAN
O Captain! my Captain! our fearful trip is done, 
The ship has weather’d every rack, the prize we sought is won, 
The port is near, the bells I hear, the people all exulting, 
While follow eyes the steady keel, the vessel grim and daring; 
                         But O heart! heart! heart! 
                            O the bleeding drops of red, 
                               Where on the deck my Captain lies, 
                                  Fallen cold and dead. 

O Captain! my Captain! rise up and hear the bells; 
Rise up—for you the flag is flung—for you the bugle trills, 
For you bouquets and ribbon’d wreaths—for you the shores a-crowding, 
For you they call, the swaying mass, their eager faces turning; 
                         Here Captain! dear father! 
                            This arm beneath your head! 
                               It is some dream that on the deck, 
                                 You’ve fallen cold and dead. 

My Captain does not answer, his lips are pale and still, 
My father does not feel my arm, he has no pulse nor will, 
The ship is anchor’d safe and sound, its voyage closed and done,
From fearful trip the victor ship comes in with object won; 
                         Exult O shores, and ring O bells! 
                            But I with mournful tread, 
                               Walk the deck my Captain lies, 

                                  Fallen cold and dead.


**As president of america he took the secession to abolish slavery from america South estate opposed this decision and civil war ensued .He was then killed .WHITMAN's poetry is the elegy of his death and great work as a captain he called him father .
Important note :

My Captain!" after Abraham Lincoln's assassination in 1865. The poem is classified as an elegy or mourning poem, and was written to honor Abraham Lincoln, the 16th president of the United States. 

Theme :

O Captain! is Whitman's elegy ,a poem of mourning after a person's death—on Abraham Lincoln in a section called "Memories of Lincoln." "O Captain! ... Whitman was immensely moved by President Lincoln's assassination (গুপ্তহত্যা) .


Summery :

The poem is an elegy to the speaker's recently death Captain, at once celebrating the safe and successful return of their ship and mourning the loss of its great leader. 
In the first stanza, the speaker expresses his relief that the ship has reached its home port at last and describes hearing people cheering. Despite the celebrations on land and the successful voyage, the speaker reveals that his Captain's dead body is lying on the deck. 
In the second stanza, the speaker prays (implores) the Captain to "rise up and hear the bells," wishing the dead man could witness the elation(উল্লাস). Everyone worshiped the captain, and the speaker admits that his death feels like a horrible dream. 
In the final stanza, the speaker set by side  his feelings of mourning and pride.


Analysis
O Captain! My Captain! written in Extended Metaphor.It is the only Whitman's poem that has a regular meter and rhyme scheme.
Whitman wrote this poem shortly after President Abraham Lincoln was assassinated. 
It is an extended metaphor intended to memorialize Lincoln's life and work. The Captain represents the assassinated president; the ship represents the war-weathered nation following the Civil War; the "prize won" represents the salvaged union. 

America's confusion at the end of the Civil War. 
During the Civil War (1861-1865), Northern states fought against Southern states in response to the South’s attempt to shrink from the union. While slavery was at the heart of the South’s desire for independence, Whitman’s poem does not mention this issue. Instead, it focuses on one of the main reasons Northerners fought in the war: the preservation of the union.

Whitman's poetry places a lot of emphasis on the individual. 

While the Civil War claimed many lives, it led to the reunification of the Union, so many Americans felt similarly divided. In Whitman's poem, the speaker believes that he should be part of the "other" group, celebrating the return to safety. However, his inner thoughts set him apart from the crowd as he tries to reconcile his emotional reaction to the Captain's death.